Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Douglas I. Katz, M.D.
Neurology Physician in Boston, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1205899846
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Registry record
Entity type Individual (Type 1)
Name Douglas I. Katz
Credential M.D.
Sex Male
Practice address 725 Albany Street, Suite 7b, Shapiro Bldg., Boston, MA, 02118
Phone (617) 638-8456
Fax (617) 638-8465
Enumeration date Apr 6, 2006
Last updated in NPPES Nov 12, 2025
Taxonomy & licenses
2081P0301X Brain Injury Medicine (Physical Medicine & Rehabilitation) Physician Allopathic & Osteopathic Physicians · License 47972 (MA) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure.
About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 3121616 | Medicaid | NH | - |
| 110053703A | Medicaid | MA | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for Douglas Katz?
The National Provider Identifier (NPI) for Douglas Katz is 1205899846, a Type 1 (individual) record in the CMS NPPES registry.
Where does Douglas Katz practice?
The practice location on file with NPPES is in Boston, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Peter Siao-Tick-Chong Neurology Physician · Boston, MA NPI 1548238967 Sanford Auerbach Neurology Physician · Boston, MA NPI 1730141326 Marie-Helene Saint-Hilaire Neurology Physician · Boston, MA NPI 1245293851 Steven Feske Neurocritical Care Physician · Boston, MA NPI 1720045123 Alexander Rae-Grant Neurology Physician · Boston, MA NPI 1811083066 Anna Cervantes-Arslanian Neurology Physician · Boston, MA NPI 1548433030 Ika Noviawaty Epilepsy Physician · Boston, MA NPI 1265675292 Kara Smith Neurology Physician · Boston, MA NPI 1194952523
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-12.